Lead Engineer - Core Wireless ( Dev - Test) @ Tejas Networks

What you work:

As a Lead Engineer, you will be responsible for integrating testing into the development process, designing and executing automated and manual tests to ensure software quality, and collaborating with developers to identify and resolve issues early. This role will enhance the overall efficiency of the development cycle and improve product reliability.

• 4G EPC Testing: Develop, execute, and validate test plans for 4G EPC components including Serving Gateways (SGW), Packet Gateways (PGW), Mobility Management Entity (MME), and Home Subscriber Server (HSS). Ensure interoperability and functionality of these components in various network scenarios.
• 5G Core Testing: Design and implement test plans for 5G Core network functions, including Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF). Validate 5G NR (New Radio) integration and end-to-end functionality.
• Protocol Validation: Test and validate protocols used in 4G and 5G networks, such as GTP, SCTP, and HTTP/2. Analyze protocol exchanges to ensure correct implementation and performance.
• Performance Testing: Conduct performance tests for both 4G and 5G core networks. Measure metrics such as throughput, latency, and scalability. Identify performance bottlenecks and work with engineering teams to resolve them.
• Automation and Scripting: Develop and maintain automated test scripts and frameworks for both 4G and 5G core testing. Utilize scripting languages (e.g., Python, Bash) and automation tools to improve testing efficiency.
• Issue Resolution: Identify, document, and track defects and performance issues. Collaborate with development and operations teams to troubleshoot and resolve issues effectively.
• Documentation and Reporting: Create detailed test documentation, including test plans, cases, and reports. Provide clear and concise communication on test results and issues to stakeholders.
• Collaboration: Work closely with cross-functional teams including software developers, network architects, and product managers to ensure comprehensive testing and integration of core network components.
• Continuous Improvement: Stay abreast of the latest advancements in mobile core technologies (both 4G and 5G). Suggest and implement improvements to testing methodologies and tools.

Mandatory skills:

• Deep knowledge of 4G EPC components and protocols (e.g., GTP, SCTP).
• Strong understanding of 5G Core functions and protocols (e.g., N1/N2/N3/N4 interfaces, HTTP/2).
• Experience with network simulators/emulators and traffic generation tools.

Desired skills:

• Proficiency in scripting languages for automation (e.g., Python, Bash).
• Excellent analytical and problem-solving skills, with the ability to diagnose and resolve complex network issues.
• Strong verbal and written communication skills. Ability to effectively articulate technical concepts to various stakeholders.
• High level of attention to detail and a methodical approach to testing and quality assurance.

Preferred Qualifications:

• Experience: 7 to 10 yrs from Telecommunication or Networking background.
• Education: Tech/BE (CSE/ECE) or any other equivalent degree